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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-10 07:16:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-10 07:16:58 -0800
commit53910146dfc118d9f86eeb88775ccd6fafebb09d (patch)
tree1fc312c78d4fc04ff64383ed5c07b6fb16346b13
parent5551638acb3dbfa1c92335464158fccfa46f5a00 (diff)
parent77058e1adcc439151db41f2b84e4867a88113cd8 (diff)
downloadlinux-linaro-stable-53910146dfc118d9f86eeb88775ccd6fafebb09d.tar.gz
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: Fix address masking bug in hpte_need_flush()
-rw-r--r--arch/powerpc/mm/tlb_hash64.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
index 282d9306361f..1ec06576f619 100644
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -63,15 +63,21 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
if (huge) {
#ifdef CONFIG_HUGETLB_PAGE
psize = get_slice_psize(mm, addr);
+ /* Mask the address for the correct page size */
+ addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1);
#else
BUG();
psize = pte_pagesize_index(mm, addr, pte); /* shutup gcc */
#endif
- } else
+ } else {
psize = pte_pagesize_index(mm, addr, pte);
+ /* Mask the address for the standard page size. If we
+ * have a 64k page kernel, but the hardware does not
+ * support 64k pages, this might be different from the
+ * hardware page size encoded in the slice table. */
+ addr &= PAGE_MASK;
+ }
- /* Mask the address for the correct page size */
- addr &= ~((1UL << mmu_psize_defs[psize].shift) - 1);
/* Build full vaddr */
if (!is_kernel_addr(addr)) {